CN204988340U

CN204988340U - Wireless monitoring temperature psychrometric means based on 485 communication

Info

Publication number: CN204988340U
Application number: CN201520355114.8U
Authority: CN
Inventors: 傅仰取
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-05-28
Filing date: 2015-05-28
Publication date: 2016-01-20
Anticipated expiration: 2025-05-28

Abstract

The utility model relates to a wireless monitoring temperature psychrometric means based on 485 communication comprises data acquisition end and data receiving terminal, data acquisition end comprises power supply circuit, the minimum system of singlechip 1, RF sending module and temperature and humidity sensor, and the data receiving terminal comprises singlechip minimum system 2, RF receiving module, buzzer warning circuit, 485 communication circuit and host computer, and power supply circuit and temperature and humidity sensor's output signal transmits the minimum system 1 of singlechip to, singlechip minimum system 1 and the two -way power supply circuit 1 of RF sending module, singlechip minimum system 2 and the two -way data communication of RF receiving module, the output signal of the minimum system 2 of singlechip send respectively to buzzer warning circuit and 485 communication circuit, 485 communication circuit's output signal and convey the host computer, the utility model discloses it shows its job stabilization, dependable performance to gather, to handle, to cushion, to change, to report to the police and transmit the host computer to through 485 communication protocol the humiture signal.

Description

A kind of wireless monitor humiture device based on 485 communications

Technical field

The utility model relates to electronic circuit field, particularly be a kind of based on 485 communication wireless monitor humiture device.

Background technology

The detection of humiture is the Important Parameters of weaving, food, medicine, storage, has a wide range of applications field to temperature-humidity monitoring.Along with the requirement of depot safety work is more and more stricter, warehouse monitoring emerges in multitude, and it is more and more advanced that the cognition degree of warehouse monitoring and robotization embody.And protection against the tide, mildew-resistant, anticorrosion, explosion-proof be the important content of warehouse routine work, be the important indicator weighing storehouse management quality.In order to ensure serviceable life and the functional reliability of stockpile, just must carry out protection against the tide, mildew-resistant, explosion-proof requisite measure, but traditional method be with the test equipment such as humidometer, hair hygrometer, dual metal type meter and humidity test paper, by manually detecting, ventilate to not meeting the storehouse that temperature and humidity requires, dry and the work such as cooling, this manual testing's method wastes time and energy, efficiency is low, and the temperature of test and humidity error are greatly, and randomness is large.Further developing with electronic science and technology, data acquisition system (DAS) also there occurs change with rapid changepl. never-ending changes and improvements, and performance, the practicality aspect of its entirety all improve to some extent.Therefore, data acquisition structure is relied on and the Temperature Humidity Sensor measuring system developed also plays this more and more important effect in actual applications.

Utility model content

The purpose of this utility model is to provide a kind of wireless monitor humiture device based on 485 communications.

The utility model solves the technical scheme that its technical matters adopts: a kind of wireless monitor humiture device based on 485 communications, be made up of data acquisition end and data receiver, described data acquisition end is by power circuit, single-chip minimum system 1, RF sending module and Temperature Humidity Sensor are formed, described data receiver is by single-chip minimum system 2, RF receiver module, buzzer alarm circuit, 485 telecommunication circuits and host computer are formed, the output signal of described power circuit and Temperature Humidity Sensor is transferred to single-chip minimum system 1, described single-chip minimum system 1 and RF sending module bidirectional data communication, described single-chip minimum system 2 and RF receiver module bidirectional data communication, the output signal of described single-chip minimum system 2 is sent to buzzer alarm circuit and 485 telecommunication circuits respectively, the output signal of described 485 telecommunication circuits is sent to host computer.

Described Temperature Humidity Sensor adopts DHT11 digital hygro sensor as detecting element.

Described RF sending module and RF receiver module adopt CC2500 transceiver.

Described single-chip minimum system 1 adopts MSP430G2X02 single-chip microcomputer with single-chip minimum system 2.

By adopting above-mentioned technical scheme, the beneficial effects of the utility model are: the utility model adopts Temperature Humidity Sensor and single-chip minimum system to gather humiture, processes, cushions, changes, reports to the police and be transferred to host computer display by 485 communication protocols, its working stability, dependable performance.

Accompanying drawing explanation

Fig. 1 is frame assumption diagram of the present utility model;

Fig. 2 is circuit theory diagrams of the present utility model.

Embodiment

The utility model is further illustrated below in conjunction with the drawings and specific embodiments.

As Fig. 1, shown in Fig. 2, a kind of wireless monitor humiture device based on 485 communications of the present utility model, be made up of data acquisition end and data receiver, described data acquisition end is by power circuit, single-chip minimum system 1, RF sending module and Temperature Humidity Sensor are formed, described data receiver is by single-chip minimum system 2, RF receiver module, buzzer alarm circuit, 485 telecommunication circuits and host computer are formed, the output signal of described power circuit and Temperature Humidity Sensor is transferred to single-chip minimum system 1, described single-chip minimum system 1 and RF sending module bidirectional data communication, described single-chip minimum system 2 and RF receiver module bidirectional data communication, the output signal of described single-chip minimum system 2 is sent to buzzer alarm circuit and 485 telecommunication circuits respectively, the output signal of described 485 telecommunication circuits is sent to host computer.

Power circuit provides stable operating voltage, by the Temperature Humidity Sensor of data acquisition end, signals collecting is passed to minimum Single Chip Microcomputer (SCM) system 1, by single-chip minimum system 1 control RF sending module, the signal collected is sent to the RF receiver module of receiving end, by single-chip minimum system 2, data are passed to host computer by 485 telecommunication circuits to show, if the data collected are below or above the alarming value of setting simultaneously, control buzzer alarm circuit is sent chimes of doom by single-chip minimum system 2, realizes the function of temperature and humidity monitor.

Described Temperature Humidity Sensor adopts DHT11 digital hygro sensor as detecting element, can detected temperatures and humidity simultaneously, and measuring accuracy is high, and it is not only easy to welding, and only has four limbs, decreases the design of peripheral circuit; Described single-chip minimum system 1 adopts MSP430G2X02 single-chip microcomputer with single-chip minimum system 2.Have 16 reduced instruction structures for MSP430 series monolithic, CPU power consumption can be controlled by the control bit of on off state register, and working current is extremely low.In the utility model mainly by Temperature Humidity Sensor by signals collecting, pass to single-chip minimum system 1, and sent to data receiver by RF sending module.

Described RF sending module and RF receiver module adopt CC2500 transceiver.Wherein RF sending module adopts the CC2500 chip of ripe 2.4GHz technology, CC2500 is the 2.4GHz transceiver of the real monolithic of a kind of low cost, low in energy consumption, and inside is integrated with the modulator-demodular unit that data transmission rate can reach 500kbps, hundreds of rice can be transmitted, stable working state, RF receiver module is also adopt CC2500 chip, and can better match with RF sending module, make work more stable, antijamming capability is strong, and 485 telecommunication circuits comprise TTL/COMS communication interface, high speed high cmrr example isolator, 485 differential signal conversion chips, the circuit such as build-out resistor and classical protection, there is superpower anti-interference and high common mode voltage defencive function, 485 differential signal conversion chip interfaces adopt balance to send and the mode of differential received carries out data communication, interface signal level is lower than RS-232, the chip of not fragile interface circuit, and level and Transistor-Transistor Logic level compatibility, be connected so this device adopts with TTL/COMS communication interface, have employed good isolation method, effectively prevent strong jamming and high common mode voltage on the impact of front-end equipment and damage, and repeater (8 can be added at most) regenerated signal can be added in transmission, to realize telecommunication.In this device, mainly utilize 485 telecommunication circuits can long range propagation, by the data-signal collected, pass to host computer display, reach more humane feature, so that storekeeper understands in time and records data; Also be provided with buzzer alarm circuit simultaneously, when the data collected lower than or higher than alarm settings scope time, send warning, present personnel can make corresponding solution timely, avoid not finding for a long time, and the more heavy losses caused.

Above-describedly be only a preferred embodiment of the present utility model, the scope that the utility model is implemented can not be limited, every equalization change of doing according to the utility model claim and decoration, all should still belong in scope that the utility model contains.

Claims

1. the wireless monitor humiture device based on 485 communications, it is characterized in that: be made up of data acquisition end and data receiver, described data acquisition end is by power circuit, single-chip minimum system 1, RF sending module and Temperature Humidity Sensor are formed, described data receiver is by single-chip minimum system 2, RF receiver module, buzzer alarm circuit, 485 telecommunication circuits and host computer are formed, the output signal of described power circuit and Temperature Humidity Sensor is transferred to single-chip minimum system 1, described single-chip minimum system 1 and RF sending module bidirectional data communication, described single-chip minimum system 2 and RF receiver module bidirectional data communication, the output signal of described single-chip minimum system 2 is sent to buzzer alarm circuit and 485 telecommunication circuits respectively, the output signal of described 485 telecommunication circuits is sent to host computer.

2. a kind of wireless monitor humiture device based on 485 communications according to claim 1, its feature exists: described Temperature Humidity Sensor adopts DHT11 digital hygro sensor as detecting element.

3. a kind of wireless monitor humiture device based on 485 communications according to claim 1 and 2, its feature exists: described RF sending module and RF receiver module adopt CC2500 transceiver.

4. a kind of wireless monitor humiture device based on 485 communications according to claim 1 and 2, its feature exists: described single-chip minimum system 1 adopts MSP430G2X02 single-chip microcomputer with single-chip minimum system 2.